Connect 2 Grid Warp Or Invert Source And Destination

I want to have an interactive "negative" / "opposite" grid warp. The idea is that this 2nd grid warp have inverted point placement on source and destination.

So I wanted to connect the point from one grid warp to another. Or just connect the source from grid warp A one destination of grid warp B (and the opposite). But I don't find a way to do this in an interactive way

I only succeed to do the trick by using the copy/paste from on grid warp points to another. But, once again, I want this to work automatically.